Frankly, I've usually viewed hecklers as something to have fun with. They're easy, especially if I have the microphone advantage. It's easy to (with humor) turn the rest of the crowd against them. One way I used to deal with what I call the "Buffetteers" was to ask, "So you really dig Jimmy, huh? I used to hang out with him in Mobile before he had a record and he taught me this song - never could figure out why he never recorded it." Then I'd sing one of mine that had tropical imagery. Everybody won. They thought they had one up on the other Parrot Heads, the club owner had more drink sales lined up, and I got appreciation for one of mine. Ha Ha.